Use half-angle identities to find the exact value of the expression.sin 
A. 
B. 
C. 
D. 
Answer: B
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Use the elimination method to solve the system of linear equations. x + 4y = 28x + 5y = 16
A. (3, 2) B. (2, 0) C. No solution D. (-2, -1)
Determine which of the following methods is the best choice for solving the given equation: factoring, using the principle of square roots or using the quadratic formula. Then, solve the equation.x2 + 16x = 0
A. Quadratic formula; -16 ± 
B. Square root principle or factoring; -1, -16
C. Square root principle; 16, 0
D. Factoring; -16, 0
Solve the problem.An airline with two types of airplanes, P1 and P2, has contracted with a tour group to provide transportation for a minimum of 400 first class, 900 tourist class, and 1500 economy class passengers. For a certain trip, airplane P1 costs $10,000 to operate and can accommodate 20 first class, 50 tourist class, and 110 economy class passengers. Airplane P2 costs $8500 to operate and can accommodate 18 first class, 30 tourist class, and 44 economy class passengers. How many of each type of airplane should be used in order to minimize the operating cost?
A. 9 P1 planes and 13 P2 planes B. 9 P1 planes and 12 P2 planes C. 14 P1 planes and 7 P2 planes D. 5 P1 planes and 22 P2 planes
Find the area of the region bounded by y = x , y = x4 , x = ?1, and x = 0 .
What will be an ideal response?